Apparatus for detecting leaky cans



June 24, 1930. R. M. GARRETT APPARATUS FOR DETECTING LEAKY CANS Filed June '7, 1928" 8 Sheets-Sheet v INVENTOR BYM ATTORNEYJ" a June 24, 1930. R. M. GARRETT 1,766,019

APPARATUS FOR DETECTING LEAKY CANS Filed June 7, 1928 a Sheets-Shed 2 fl if {a 1 fima i INVENTOR ATToR'N EYJ' June 24, 1930. R. M. GARRETT APPARATUS FOR DETECTING LEAKY CANS Filed June 1928 8 Sheets-Sheet INVENTOR ATTORNEYJ' June 24; 1930. v Q R. GARRETT 1,766,019 I APPARATUS FOR DETECTING LEAKY CANS Filed June 7, 19328 8 Sheets-Sheet 4 INYENTOR ATTORNEYJ' Jfinc 24, 1930. GARRETT I 1,766,019

APPARATUS FOR DETECTING LEAKY CANS Filed June 7, 1928 8 Sheets-Sheet 5 INVEIQTOR ATTORNEYJ June 24, 1930. R. M. GARRETT 6,019

APPARATUS FOR DETECTING LEAKY CANS Filed June '7, I928, 8 Sheets-Sheet 6 NVERTIOR ATTORNEYJ' June Z4, 1930. R. M. GARRETT APPARATUS FOR DETECTING LEAKY CANS Filed June '7, 1928 8 Sheets-Sheet INVENTOR B .2. M flmmvm ATTORN EYJ' June 24, 1930. R. M. GARRETT APPARATUS FOR DETECTING LEAKY CANS 8 Sheets-Sheet INVENTOR Filed June 7, 1928 ,ATTORNEYJ I In aplparatusst Patented June 24, 1930 Application fled i,

. My invention has for-its object an improved apparatus tori-detecting. leaky cans,

whether em ty or, filled,' "and separating I them from the normal cans. I

' hisgpurp se heretofore l mffmersed used, a1 7.

ed at the the cans. ave.

in compressed compressed air,

cans into which I etrated will have b ds I d outwar at the center owing tot I d i erence between the pressure'of; 'the; containedair and the atmospheric pressure-gen the outside.

All the cans, mean and bulged, have It been then fed telving drum provided with mechanic ing. devices which would gauge an until theywer'e e'l asedand discharged at a certain point; whi'ie thenormal canswould not be so seize at another ointl The-mac anica air has enseparating them' fro he normal cans were I ci'ent apparatus for detecting the bulged;

To, this and other ends my invention 'com prises a can ca'rrier,lan electric detecting circuit, an electric motor in circuit, a can'se aratingdevice controlled by the electric motor, a-means for pushingeach can axially on the carrier at a'predetermined point in the movement of'gthe carrier, electric and stop contacts positioned axially opposite said pushing means to meet the center and 40 edge respectively ofthe opposite end of the pushed can when bulged, but'only the edge of said can iflnot bulged, the contacts being in the detecting and separating circuit, so that bulged cans will 0 rate the electric circuit and motor an rating device ,differentl from the normal s that leaky.

ii "the bulged cans imam-,1 ployedrfor thefib gee c'ansandf ventionis to ipifovide a may, serial No. 288,610;

d, 1 nd i ld be discharged understood, I shall'first'describe in detail present prefer to employ a revolving drum aving peripheral open pockets-into which the cans are fed from the compressed air ap' paratus, and equipl'each pocket with a canpushing device and the contacts of theelectric detecting circuit; I further provide a solenoid with armature as a mQWrQih-the circuit which when vitalized by'ja bulgedcan. will by mechanical devicescause-' thefbul" ed can to be locked "and retained. initstjpoc at until it reachesv a1 ceftain fpoint,awhen it; is a, released and'falls from'itslpecket, The-nor mal cans,f which do notithus' vitalize the'z cir I cuit and soleuoid,;and are'i'thusnobretained in their open pockets f falltherefrom at a 65 point 'separatffrom 'the discharge pointof the bulged cans so that the normal-and and separated.

In order that'my invention may be'i ullyj" Z0 the mode in which jI "at-J present? Prefer to car 'fathe invention'into practice and then pa'rtic'flarlypoint' out. the novel features of 7 Reference is to be had to the accompanydrawings forming partof this applica- -from the side'opposite to that of -,Figure 1.

the ean sepacans, and separate the eaky, from-the norelectric detecting an separatingyeircuiti as hereinafter de- Figures 4, 5, and Gare enlarged'sectional a side views showing in various plositlons the means for retaining and dis bulged leaky cans.

arging I the. gure 7 is an *enlarged' -perspective. view ssf I on-iiiirwhich like parts aredesignatedby I 7 1 cans and separating thesame number in "allithe figures. v

- to them from the nomialfc'ans.

of the self-adjustiug'rmounting.ofthe electrical "can detectingcontacts-' I Figure-8' is a sectional plan view ofathe Sam Figure} is a dia rammatic view pf the,

In thevdrawings, I have illustrated the automatically separating the bulged leaky cans from the normal cans. In-the drawings 10 designates a cylindrical carrier drum-mounted to revolve on its.

mission; e. v t. on one en of each. etnll is vfixed to. the drum-atrightgan les eaxis-of the :.a qcketeant i t ib '1 c ta 1 radially outward,

from the, compre'ssed 'air apparatus, which R vice to be described in which the leaky can is located;

pppsat sides in their pockets but will fall or roll by gravity out of the open pocket into a chute 48 (Figure 5) at a different point, indicated at 24, Figure a I prefer at present to cause each can to be pushed axially toward the contacts 21 and 22before it reaches the top of the drum revolution, by means. of a suitable cam '25 fixed on the shaft bearin 14, and a cam follower 26 for each poc et pivoted to a bearing post 27 on the drum, the. outer end of each follower carrying a movable springcushioned can-Presser 28, in line with the can, as best shown in Figures 1 and 2.

The separation-controlling solenoid 29 in circ,uit'is here shown fixed on a standard 30 ofthe frame rising above theshaft bearing 15. The movable armature 31 of the solenoid is fixed on an arm 32 pivoted at 33tothe I standard, and having an extension arm 34:,

bowed around the solenoid 29, andcarrying a rod or setter 35 for the can-retaining mechanism." The arrangement issuch that when vthe solenoid 29 is temporarily vitalized by a bulged can as above and hereafter described, the setter 35 will swing inward on its iv- ;;ota1 center33' axially toward the drum 1nt0 the path of the canlocking 'or retaining depocket of the particular Thecan retaining device for each pocket now preferred by me and shown in detail finF1gures-.4,5, and 6consists of a can looking bolt .36 mountedto slide axiallyj'and diagonally in. the periphery of the drum carrier 10 across the open side of the pocket r i e i eyib t ease v an, .a-nd i" the x center e .-,h n head if will touch the middle'v contact 21. If ad'iof, the can, bu nemesi d contact and "pair "of 1 n' the detecting ich' is shown di closed, andyjthrough a solenoid in: circuit and mechanisnif operated thereby as herein- :;afte r described,=t at particular can will be locked in the-pocketfuntil' it reaches acertain point 23, Figure l, in the revolution f the-drum when it' will be released and all into achutebO .(Fi ure5).

a The normal cans in tfiejp'ockets which do ot'thusafl'ect the circuit will not be locked howevenfli's not bulged and across the outside of the'can contained herein, and :al'soga setting lever 37 to which hei retaining bolt- 36 is pivotal! connected hichis-itself pivoted to t e drum on (renter 38. The setting lever 37 for each pocket, in addition to the arm 39 which is pivotally connected to the retaining bolt 36, has an arm 40 connected to a spring 41,

by which the retaining bolt 36 is normally" withdrawn from the pocket as shown in Figures'5 and 6. The lever 37'hasalso a setting arm; 42 arranged vto revolve with the drum" in the path of thesetting rod 35 before referred to, when the setting rod35 is projected by the vita-lization of the solenoid 29. Y s

The setting lever37 is thus swung on its pivot against the spring lby the setting rod 35, and the can-retainingbolt 36 thus projected across the pocket and contained le-algy can so as to lock the can in the pocket, until released and discharged as hereinafter described. V v

The setting'lever "37 has another arm 43,

which when the lever is rocked as described,

is caught as shown in Figure 4: in the notch of the detent arm 44 ofa trigger 45. The trigger 45 is pivoted vt0 the drum and has a:

' is connected spring 46 to hold it in engagement with the lever arm 43 and also a releasing arm 47.

As the drum reaches'the point 23, where it is to be discharged, the releasingarm 47 of the trigger 45, meets a tripper 49 fixed on the frame, as shown in Figures 3 and is thereby rocked against retracted can-retaining from across the pocket can.

The bulged can being released then falls from its pocket into its discharge roach the upper detecting position, I preer to arrange the circuit as shown (Figure 9), connecting parts being shown also in Figures 2 and 4.

he positive terminal of the current source by a wire 51 to one terminal of the solenoid 29. The other terminal of the solenoid 29 is connected by the wire 55 to the yielding contact 58 which is arranged in the path of a circular series of contacts 59 fixed on the drum so as to be met by such contacts 59 in succession.

The contacts 59 are connected by wires 60 (Figure 9) to the respective can contacts 21. he other can contacts 22 are connected -by wires Gland 62 with a common wire to the terminal of a contact plate 54 which is fixed on the hub 13, the revolving-contact plate 54' revolving against a contact plate 52 which is fixed, as shown'in Figure 2, on the shaft bearing 15. From the terminal 53 0n the fixed'contact plate 52 a wire leads to the negative pole of the source of current.

and can approaches the detectin position, the corresponding circuit through the cancontacts 21, 22, normally open, is temporarily closed by the meeting of the respective contact 59, with the pivotal contact 58. After the can-positioning and detecting operation described is completed, the respective revolving contact 59 passes the yielding contact 58, breaking that particular pocket circuit, and the detecting circuit of each succeeding pocket is temporarily closed and broken in the same manner.

It is evident that my detection process may be performed by other electric devices than that. shown and described herein, and that the separatin devices shown may be greatly varied without departin from the boundaries of my invention as defined by the following claims. v

I claim as myinvention:

5. The trigger 45 its engaging spring; 46, the lever 37 released, and the springbolt 36 withdrawn and contained leaky;

. meet the center 12-of :the drum shaft ularity 1n the head of th s therein, and With this arrangement, as each pocket ,1 Means for detecting separating" gas I bulgedcans, from, normal. cans, revolves and the bulged can comprising a can carrier. to carry the cans transversely,

means for pushing each can axially on the carrier at a predetermined ,7 point, contacts axially opposite, the can pushing means positioned to meet vthe center and edge respectively of each bulged can but only the edge of normal cans when I pushed,- an electric cir- ,cuitf including the contacts, an electric motor in circuit, and a canseparating devicecontrolled by thev electric motor.-

r V 2. .Means for detecting and separating gas bulged cans'from normal-cana arevolving drum, transverse-can-pockets on the drum,

in each pocket, contacts for each posite the can pushing means, positioned to and edge respectively of each bulged can but only the edge of normal cans when pushed, an electric circuit including the contacts, an electric motor in circuit, and

omprising means.;for pushing the cans axially pocket opmeans operated bythe electric motor when (l vitalized whereby one set of in its pockets and released point different from the other set of cans.

3. Means for detecting gas-bulged cans in accord with claim 2 in which the can pushing means comprises a cam, a cam-follower onthe drum, and a can pusher for each pocket.

4. Means for detecting gas-bulged leak cans in accord with claim 1, in which the contacts for the head edges of the canv are fixed in a plate on opposite sides ofthe contact for the head center, pivotally mounted to compensate for irrege can." Y;

5. Means for detecting and separatinggasbulged leaky cans, in accord with claim 2 in which the can retaining and releasing means comprises a retaining bolt to be and said plate is jected across each pocket outside the can 7 means motor when vitahzed whereby the electric gasa can of one set,

to project bolt and retain the can the motor,

and a tripper to cause the can-retaining bolt 3 to be retracted and determined point. I a

7. Means for detecting and separating gasulged cans in accord with claim 2 in which the can-retaining and releasing means comrelease the can at a pre- 5' I prises a spring-retracted can"retaining bolt for each pocket, a setter operated by the motor when vitalized by a can of one set to cause the can-retaining bolt to be projected, a trigger to hold the retaining bolt projected, and a tripper to release the trigger revolving circult s and permit by its sprin 8. Means .at a predetermined point.

in accord with claim 2, in which the contacts of each can circular series of branch contacts on the drum, and a yielding contact in fixed in the path of the revolving series of branch contacts so as to close each branch circuit temporarily as the correthe retaining bolt to be retracted;

For detecting and separating gas-- bulged leaky cans pocket areconnected by a branch circuit to one of a 

